Translations:Digital linear time-invariant systems/9/en

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for any constants a and b and for any digital signals and . In particular, if is the output of a linear system for input , then is the output for input . That is, if we amplify the input of a linear system by a constant factor, the output also is amplified by this same constant factor. In addition, if and are the respective outputs of a linear system for the inputs and , then is the output for input . That is, if we add the inputs of a linear system, the outputs also are added.